There are two ways to send SMS messages in the USA.
The 'unapproved' way. Find a 'free' SMTP gateway, and send messages via email.
Advantages :
- Free
Disadvantages :
- Subject to anti spam filters. You are at risk of having your IP address blacklisted.
- You will need to know which mobile phone carrier owns the handset you are sending a text message to. Each carrier has a different gateway configuration.
- Delays, Messages can take seconds, minutes or hours to be delivered.
The 'approved' way - Via an aggregator or service provider who has officially provisioned connections to the mobile phone carriers.
Advantages :
- Your messages will get delivered
- Fast
- Single messages or in bulk
- With a service level agreement
Disadvantages :
- Not free!
The 'unapproved' way. Find a 'free' SMTP gateway, and send messages via email.
Advantages :
- Free
Disadvantages :
- Subject to anti spam filters. You are at risk of having your IP address blacklisted.
- You will need to know which mobile phone carrier owns the handset you are sending a text message to. Each carrier has a different gateway configuration.
- Delays, Messages can take seconds, minutes or hours to be delivered.
The 'approved' way - Via an aggregator or service provider who has officially provisioned connections to the mobile phone carriers.
Advantages :
- Your messages will get delivered
- Fast
- Single messages or in bulk
- With a service level agreement
Disadvantages :
- Not free!
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